Inventories (Tables)

12 Months Ended

Dec. 31, 2011

Inventory Net (Tables) [Abstract]

Inventory Components

	December 31,
	2011		2010
Raw materials and work in process	$	63,216	$	60,465
Supplies and service parts		68,600		65,878
Finished products		71,958		68,941
Inventory at FIFO cost		203,774		195,284
Excess of FIFO cost over LIFO cost		(25,175)		(26,317)
Total inventory, net	$	178,599	$	168,967